It isn't hard to get lots of low bass, quite often rather poorly controlled but it is very hard to get really good well controlled low bass.
I have two speakers that are excellent at low bass (one is 3dB down at 23 Hz and the other at 20 Hz. Implementing well controlled low bass is hard to do and probably impossible to do cheaply except in boom boxes
There is a big difference between low bass and just a lot of bass.
@tonywinga - enjoyed your description from the manufacturer side!